You may have heard of stem cells before, but there is a lot of mystery about what they actually … do. Why is this such a promising new field? Click here to see more videos: http://www.m301.me/lifenoggin Life Noggin is a weekly animated educational series. Whether it's science, pop culture, history or art, we explore it all and have a ton of fun doing it. Follow Us! https://twitter.com/LifeNoggin https://facebook.com/LifeNoggin https://www.LifeNoggin Life Noggin Team: Animation & Designed by: http://www.krofl.com Voiced by: http://youtube.com/patdoesit Written by: https://www.youtube.com/coconutcab Produced by: http://www.twitter.com/IanDokie Sources: Bone marrow transplant: http://www.cancer.net/navigating-cancer-care/how-cancer-treated/bone-marrowstem-cell-transplantation/what-stem-cellbone-marrow-transplantation http://www.nlm.nih.gov/medlineplus/ency/article/003009.htm Gene Expression: http://www.nature.com/scitable/topicpage/gene-expression-14121669 http://www.pa.msu.edu/sciencet/ask_st/060293.html Stem Cells: http://stemcells.nih.gov/info/basics/pages/basics3.aspx http://www.medicalnewstoday.com/info/stem_cell/